Sadircn



L. HOFFMAN.

SADIRON.

APPLICATION FILED NOV. 24, 1917.

1,428,959, Patented Sept. 12, 1922.

2 SHEETS-SHEET I.

L. HOFFMAN.

SADIRON. APPLICATION FIQLED NOV. 24, i917.

Patented Sept. 12, 1922.

2 SHEETS-SHEET 2- gwuentoz l aten'ted Sept. 1 2, 1922.

UNITED STATES LOUIS HOFFMAN, OF DULUTH,

STEAM PBESSING IRON COMPANY,

MINNESOTA, ASSIGNOR, BY MISNE ASSIGNMENTS, TO

A CORPORATION 01 DELAWARE.

SADIBCN.

Application filed November 24,1917. Serial a. 203,765.

To all whom it may concern.

Be it known that I, LOUIS HOFFMAN, a citizen of the United States, residin at Duluth, in the county of St. Louis and tate of Minnesota, have invented certain new and useful Improvements in Sadirons, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to sad-irons and in particular to such an iron heated by the burning ,of gas supplied to the interior thereof and is an improvement upon a somewhat similar device patented by me March 13th, 1917, No. 1,218,863.

The principal simplify the construction of the iron and thereby lessen the number of parts.

Other advantageous features of the novel construction will appear in the further description thereof.

In the accompanying drawings forming part of this application and in which similar reference characters indicate like parts:

Figure l is a central vertical sectional view of my improved iron illustrating the heating element in elevation,

Figure 2 is a top plan view of-the completely assembled iron, 7

Figure 3 is a rear end elevation of Flgure 1,

Figure 4 is a horizontal cross sectional view through the base of the iron showing the relative position of the cored-out compartments therein,

Figure 5 is a vertical sectional view on the line A-B, Figure 1, and

Figure 6 is a top plan view of the heating device.

1 and 2 represents the body and base portions respectively of the iron, they being formed of a single piece of cast metal.

In the base 2 is formed, at the time of casting and by coringiout, a distributing chamber comprising the central channel 3 and relatively short lateral channels 4, the central channel 3 being curved laterally at the forward end of the iron and terminating in an enlarged portion 5 positioned to one side of the central enlarged portion forms the receiving end of the chamber.

A hole 6 extends through the wall of the base above the chamber and is positioned centrally over the receiving portion 5.

object of this invention is to line thereof and which About this hole and above the upper wall of the base 1s formed a boss 6' for-suitable reception, either by being screw-threaded therein or by ground joint, of the conductor In each of the lateral channels 4, except the two communicating directly with the central front end portion 5, are formed two spaced circular depressions or wells 8 which extend within close proximity to the lower face of the base of the iron and into each of which is drilled a small hole 9 from, the exterior or bottom of the base;

The channels 4 directly communicating with the enlarged portion 5 of the central channel have four such wells, three in one of the channels and one in the other, this being for the purpose of as equally distributing such throughout the base of the iron as possible, these wells being cored-out simultaneously with the channels.

Longitudinally with respect to the central channel 3, and spaced apart, one opposite each opposed pair of lateral channels 4, there are a plurality of pillars 14 which are integral parts of the base and for the purpose, other than the equal distribution of the heat in the iron, of also equally distributing the steam or water, as the case-.

may be, by the fluid having to pass about each pillar at the junction of the lateral channels, thus causing it to be more equally distributed throughout all of the channels.

A well 15, identical :to the wells 8 is formed intermediate of each pair of pillars and for the same purpose as the wells 8.

The open substantially rectangular shaped combustion chamber formed in the iron above the base 2 and under the cover 10 hascommunicating therewith, through the back end of the iron, a rectangular shaped opening 11, the office of which will be described ater.

The opening 12 longitudinally with respect to the upper edges of the side walls of the bodyportion and directly beneath the cover 10 also communicates with the com- ,bustion chamber, as do also two series of circular holes 13, formed through the sides of the body portion.

The cover 10 is of a single cast metal piece and has formed therein by coring out at the time of castinga steam generating chamber 16, it being divided from the forward end of the iron rearwardly .into two transformation process and to equal halves by dr steam as possible.

The water entrance to the chamber is through the hole 19 in the upper wall of the cover and the discharge opening is through the hole 20 in the lower wall of the cover, in which latter opening is securely fixed in any desired manner the upper end of the conductor pipe 7, there being a suitable boss 21 upon the lower side of the cover similar to the boss 6. Directly above the pipe 7 and concentric therewith is another hole 22 through the upper Wall of the cover, thus making two holes 19 and 22 through the upper wall of the cover, the former communicating only with the steam generating chamber and the latter communieating with both the generating chamber and the distributing chamber in the base of the iron through the conductor pipe 7 Over these two holes in the to of the cover is securely attached by suita le bolts 23-23 the valve housing 24, it having vertically reciprocally mounted therein two similar spaced valve stems 25 and 26, there being an enlarged cylindrically shaped chamber 27 about each stem, said chambers communicating with each other by meansof an opening 28 in the division wall therebetween.

The lower end of each chamber 27 is stopped b a suitable screw threaded plug 29 and through which the valve stems loosely pass each of the latter carrying a valve 30 which fits into'a cooperative countersunk seat formed about the valve stem inthe rotruding end of the plug. 1

About each valve stem, within its respective chamber and ad'acent the upper end thereof is fixed a collar 31 between which and the lower end of the respective cham-' ber a suitable expansive spiral spring 32 is installed for the purpose of keeping the valves 30 normally closed, the upper protruding end of each valve stem being provided with a suitable stufiing gland 33, com.- mon in similar devices.

The cover 10 is attached to the body portion 1 by suitable screws 34 and the handle 35 is mounted upon the cover in the usual manner by a U-shaped metal support 36.

The under side of the forward end of the handle is notchedout as at 37 to accommodate the finger end of the valve controlling lever 38 which is pivotally mounted at 39 upon the'free end of the laterally extending arm 40 carried upon the shaft 41 journalle centrally within the front end of the U- shaped supporting member and just below the bolt 42 which holds the handle 35. The opposite end 45 of the controlling lever 38 extends forwardly beyond the end of the handle and engages the end of the valve stem 25 which controls the water supply leading direct through the conductor p1pe 7 to the distributing chamber in the base of the iron.

Inside of the U-shaped support and nonrotatably fixed to the shaft 41 is the depending thumb lever 43 and just outside of the laterally projecting arm 40 upon the shaft 41 and also non-rotatably fixed thereto is the nut or hub iece 44 Which tends to hold the arm 40 tig itly against the support 36, the shaft being free to revolve in both the supportand the arm.

The outer end of the shaft 41 is bent laterally at right angles to the body portion and engages, the upper end of the valve stem 26 which controls the water supply to the enerating chamber and it is obvious that y rotating the shaft 41 in the proper direction the valve 30 at the lower end of the stem 26 may be operated for admitting water into the generating chamber, it being otherwise held closed by the action of its respective spring 32 as is also the valve 30 on the stem 25 when not being depressed by the end 45 of the lever 38.

This arrangement of valve controlling levers is exceedingly simple and convenient of operation by the user of the iron.

Extending rearwandly at a suitable angle from one side of the housing 24 is a boss 46 formed integral with the housing for receiving the screw-threaded end ,of the water supply pipe 47 which extends horizontally withrespect to the iron and adjacent -the upper'side of the cover to the rear thereof where it is supported Within a bracket 48 upon thecover, and, from thence, leads to desired form of valve 49.

Ey this arrangement of water supply and control, it is evident that any desired amount of water may be supplied either to the steam generating chamber or direct to the base of the iron through the pipe 7 and by the pipe 7 also communicating with the generating chamber, the steam and Water may be mixed While en route to the base of the iron, thus affording means whereby any degree of wetness of the steam may be readily accomplished.

The medium used in heating the iron is gas and the burner is illustrated at 50, it being an elongated cast twin tube, the interior of which is cored-out at the time of casting.

The tubes are united at both ends and 'communicate with each other at both ends.

One tube or side of the burner is shorter at one end than the other to provide against contacting the conductor pipe 7 when the burner is placed within the iron, the adjacent end of the opposite tube extending considerably beyond and tapering horizontally to an apex or point 51, which, when the burner is in position within the iron, rests upon a suitable projection or stepped por tion 52 upon the central front inner wall of the iron body.

\ In this manner the front end of the burher is supported at a predetermined height above the inner bottom wall of the base and which is preferably above a level with the upper edge of the holes 13. The opposite end of the burner is supported centrally within the rectangular opening 11 by a plurality of projecting portions 53 formed integral therewith and designed to engage the surrounding walls of the opening 11, thus providing space about the burner for air circulation. I

The upper central wall of the opening 11 has a notch 54 formed therein and extending diagonally from the bottom of said notch is an adjustable screw-threaded bolt 55, the ofiice of which is to hold the burner tightly in lace when the bolt is adjusted to forcib y impinge the inclined upwardly extending projection 56 formed integral with the burner upon the central upper surface thereof and adjacent the outer end.

One corner of the extreme outer end of the burner is rounded off as at 57 in such a manner as to result in the opposite corner being the longer and which latter is arched upwardly at substantially right angles to the remaining portion of the burner, terminating in the tubular cylindrical receiving neck 58. To this neck is attached in any desired manner a suitable gas supply pipe or tube 59 it having means therein for controlling the su ly of gas.

arrow cuts are made transverse the upper and lower faces of the twin tubes forming the body of the burner and through which the gas is emitted when burning. By this arrangement the flames, of the burning gas extend principally vertically both above and below the burner and the heat thus evenly distributed against the two portions of the iron most requiring it.

From the foregoing it is evident that I have materially improved and simplified the construction of my formerly patented iron' and have created an entirely novel combination.

While I have referred to the pipe 47 as hung a water supply pipe, it is evident that if the iron is being used where live steam is available, the same may be directly connected with the iron and the heating ele ment in the iron used as a super-heater.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. A sad-iron comprising in combination a base portion having a distributing chamber formed therein with openings leading from the chamber to the bottom face of the iron, an upper portion having a steam generating chamber formed therein above said distributing chamber, means providing a passageway opening at its upper end into said generating chamber and leading into said distributing chamber, a heating device interposed between said two chambers for supplying heat to both, a housing above said generating chamber, means for supplying water to said housing, means for feeding water from said housing to said distributing chamber directly through said passageway, and other means for feeding waterfrom said housing to said generating chamber, the arrangement of said'generating chamber being such with respect to the opening from said housing and the passageway to the distributing chamber that the water admitted from the housing to the generating chamber is compelled to traverse substantially the full effective length of the generating chamber before escaping to the distributing chamber.

12. A sad-iron .of the character described comprising in combination, a base portion havlng a perforated distributing chamber therein, a top portion having a steam generating chamber therein divided the major portion of its length by a partition wall, one of the divided ends bein tion of water and the opposite end for the discharge of dry steam, a pipe forming communication between the distributing chamber and the steam discharge end of the generating chamber, and a manually operated water controlling unit above the generating chamber having two discharge openings therein, one entering the water receiving end of the generating chamber and the other directly above the communicating pipe whereby all variations of a moistening medium from very dry steam to water may be.

LOUIS HOFFMAN.

Witnesses:

S. C. BRONSON, S. GEO. STEVENS.

for the recep- 

